To provide a cab bearing structure of construction equipment, which is constructed at low cost and sufficiently eases vibrations and shocks to a high-strength cab during execution of work of the construction equipment.

According to the cab bearing structure, when the high-strength cab 4 is mounted, the high-strength cab 4 is borne on a platform 1 by an additional damping mechanism 6 corresponding to a weight difference between the high-strength cab 4 and an ordinary cab, and a standard damping mechanism 3. Herein, the additional damping mechanism 6 is set on one side of the standard damping mechanism 3, on which the load of the construction equipment is increased due to mounting of the high-strength cab 4.